More than three years into the massive cleanup of Japan’s tsunami-damaged nuclear power plant, only a miniscule fraction of the workers are focused on key tasks such as preparing for the dismantling of the broken reactors and removing radioactive fuel rods.
Instead, nearly all the workers at the Fukushima Dai-ichi nuclear power plant are devoted to an enormously distracting problem: a still-growing amount of contaminated water used to keep the damaged reactors from overheating. The amount has been swelled further by groundwater entering the reactor buildings.
Hundreds of huge blue and gray tanks to store the radioactive water, and buildings holding water treatment equipment are rapidly taking over the plant, where the cores of three reactors melted following the March 2011 earthquake and tsunami. Workers were building more tanks during a visit to the complex on Wednesday last week by foreign media, including The Associated Press.
“The contaminated water is a most pressing issue that we must tackle. There is no doubt about that,” plant head Akira Ono said. “Our effort to mitigate the problem is at its peak now. Though I cannot say exactly when, I hope things start getting better when the measures start taking effect.”
The numbers tell the story.
6,000 WORKERS
Every day, about 6,000 workers pass through the guarded gate of the Fukushima Dai-ichi plant on the Pacific coast — two to three times more than when it was actually producing electricity.
On a recent work day, about 100 workers were dismantling a makeshift roof over one of the reactor buildings, and about a dozen others were removing fuel rods from a cooling pool.
Most of the rest were dealing with the contaminated water, said Tatsuhiro Yamagishi, a spokesman for Tokyo Electric Power Co (TEPCO), the utility that owns the plant.
The work threatens to exhaust the supply of workers for other tasks, since employees must stop working when they reach annual radiation exposure limits.
Experts say it is crucial to reduce the amount and radioactivity of the contaminated water to decrease the risk of exposure to workers and the environmental impact before the decommissioning work gets closer to the highly contaminated core areas.
40 YEARS
The plant has six reactors, three of which were offline when disaster struck on March 11, 2011. A magnitude 9 earthquake triggered a huge tsunami which swept into the plant and knocked out its backup power and cooling systems, leading to meltdowns at the three active reactors.
Decommissioning and dismantling all six reactors is a delicate, time-consuming process that includes removing the melted fuel from a highly radioactive environment, as well as all the extra fuel rods, which sit in cooling pools at the top of the reactor buildings. Workers must determine the exact condition of the melted fuel debris and develop remote-controlled and radiation-resistant robotics to deal with it.
The process is expected to take at least 40 years.
The flow of underground water is doubling the amount of contaminated water and spreading it to vast areas of the compound.
Workers have jury-rigged a pipe-and-hose system to pump water into the reactors to cool the melted fuel inside. Exposure to the radioactive fuel contaminates the water, and much of it pours into the basements of the reactors and turbines, and into maintenance trenches that extend to the Pacific Ocean. The plant reuses some of the contaminated water for cooling after partially treating it, but the additional groundwater creates a huge excess that must be pumped out.
Currently, more than 453,600 tonnes of radioactive water is being stored in nearly 1,000 large tanks which now cover most of the sprawling plant. After a series of leaks last year, the tanks are being replaced with costlier welded ones.
THREE MILE ISLAND
That amount dwarfs the 8,164 tonnes of contaminated water produced during the 1979 partial meltdown of the Three Mile Island nuclear plant in the US. At Three Mile Island, it took 14 years for the water to evaporate, said Lake Barrett, a retired US nuclear regulatory official who was part of the early mitigation team there and has visited the Fukushima plant.
“This is a much more complex, much more difficult water management problem,” Barrett said.
¥10 TRILLION
An estimated ¥2 trillion (US$18 billion) will be needed just for decontamination and other mitigation of the water problem. Altogether, the entire decommissioning process, including compensation for area residents, will reportedly cost about ¥10 trillion.
About 500 workers are digging deep holes in preparation for a taxpayer-funded ¥32 billion underground “frozen wall” around four reactors to try to keep the contaminated water from seeping out.
TEPCO is developing systems to try to remove most radioactive elements from the water. Officials hope to treat all contaminated water by the end of March next year, but that is far from certain.
Could Asia be on the verge of a new wave of nuclear proliferation? A look back at the early history of the North Atlantic Treaty Organization (NATO), which recently celebrated its 75th anniversary, illuminates some reasons for concern in the Indo-Pacific today. US Secretary of Defense Lloyd Austin recently described NATO as “the most powerful and successful alliance in history,” but the organization’s early years were not without challenges. At its inception, the signing of the North Atlantic Treaty marked a sea change in American strategic thinking. The United States had been intent on withdrawing from Europe in the years following
My wife and I spent the week in the interior of Taiwan where Shuyuan spent her childhood. In that town there is a street that functions as an open farmer’s market. Walk along that street, as Shuyuan did yesterday, and it is next to impossible to come home empty-handed. Some mangoes that looked vaguely like others we had seen around here ended up on our table. Shuyuan told how she had bought them from a little old farmer woman from the countryside who said the mangoes were from a very old tree she had on her property. The big surprise
The issue of China’s overcapacity has drawn greater global attention recently, with US Secretary of the Treasury Janet Yellen urging Beijing to address its excess production in key industries during her visit to China last week. Meanwhile in Brussels, European Commission President Ursula von der Leyen last week said that Europe must have a tough talk with China on its perceived overcapacity and unfair trade practices. The remarks by Yellen and Von der Leyen come as China’s economy is undergoing a painful transition. Beijing is trying to steer the world’s second-largest economy out of a COVID-19 slump, the property crisis and
Former president Ma Ying-jeou’s (馬英九) trip to China provides a pertinent reminder of why Taiwanese protested so vociferously against attempts to force through the cross-strait service trade agreement in 2014 and why, since Ma’s presidential election win in 2012, they have not voted in another Chinese Nationalist Party (KMT) candidate. While the nation narrowly avoided tragedy — the treaty would have put Taiwan on the path toward the demobilization of its democracy, which Courtney Donovan Smith wrote about in the Taipei Times in “With the Sunflower movement Taiwan dodged a bullet” — Ma’s political swansong in China, which included fawning dithyrambs